The Math Game Show: How to Find Probability of Simple and Opposite Events
TL;DR: Roll a die, getting a 4 is a simple event with one outcome. The opposite, called the complement, is everything else: rolling 1, 2, 3, 5, or 6. Here’s the handy rule that ties them together: the probability of NOT A is just 1 minus the probability of A. Since the two probabilities have […]
How to Identify Independent and Dependent Events?
Two events are independent when the outcome of one does not change the probability of the other, and dependent when it does. The practical test is whether the first event removes something from the pool. The examples below apply that test, with practice problems and answers.